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INFORMATION PROCESSING APPARATUS, NONVOLATILE STORAGE DEVICE, INFORMATION PROCESSING SYSTEM AND NONVOLATILE MEMORY CONTROLLER

  • US 20110231690A1
  • Filed: 03/01/2011
  • Published: 09/22/2011
  • Est. Priority Date: 03/16/2010
  • Status: Active Grant
First Claim
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1. An information processing apparatus connected to a nonvolatile storage device via a voltage line for supplying a power source to the nonvolatile storage device, a clock line for supplying a clock signal to the nonvolatile storage device, and one or more data lines at least one of which is pulled up by the nonvolatile storage device and which are used for bidirectionally communicating data signals with the nonvolatile storage device, comprising:

  • a voltage switch;

    a voltage source which is connected to the voltage line via the voltage switch and which supplies a predetermined first voltage to the voltage line;

    a regulator which is connected to the voltage line and which outputs the first voltage or a second voltage that is lower than the first voltage when the first voltage is applied;

    an input/output driver for driving the clock line and the data line with the output of the regulator as a power source;

    a voltage detection circuit for detecting whether a voltage of the data line is the second voltage, or a voltage that is higher than the second voltage; and

    a control unit for detecting whether a drive voltage of the information processing apparatus and a drive voltage of the nonvolatile storage device are different based on an output voltage of the regulator and a detection result of the voltage detection circuit.

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